Influence of the observed-scene structure and noise on the precision of correlating Hartmann-Shack wavefront sensing is systematically analyzed,where the scene structure is described with spatial spectrum,and the signal-noise-ratio(SNR) is described with the ratio of the root-mean-square(RMS) of image grey variance to the root-mean-square of noise.
以空间频谱描述图像结构,以图像灰度起伏的方均根值与噪声方均根值之比表示信噪比,系统分析了目标图像结构和噪声对相关哈特曼-夏克波前传感精度的影响。
Often Misunderstandings arise that the spatial spectrum of a linear physical system of finite size is discrete and the spatial spectrum of a linear physical system of infinite size is continuous, i.
常有这样一种错误概念：以为有限物理系统的空间频谱是离散的，而无限物理系统的空间频谱是连续的，即认为一个物理系统的离散或连续的空间频谱特征只取决于该系统的尺寸是有限或无限。
Based on the wave equation,we have developed the theory on harmonic generation of phase aberrated laser with nonuniform intensity profile by applying the spatial spectrum analysis to deal with the nonlinear coupling.
从波动方程出发，应用空间频谱方法处理位相畸变光束的非线性耦合问题，建立了适用于位相畸变且空间光强不均匀光束的谐波转换的理论模型。
Imitated the optical system of Rowland circle structure, the Rowland sphere structure is built in this paper, the Rayleigh-Sommerfeld diffraction scalar integral formula of electromagnetic wave is simplified on the Rowland sphere structure, the computational formulas of spatial frequency spectrum and diffractional far field distribution from the weakly guiding optical fiber LP mode are derived.
仿照罗兰圆光学系统构造罗兰球光学系统 ,在罗兰球中简化电磁波的瑞利 索末菲标量衍射积分公式 ,推导出折射率阶跃分布的弱导光纤LP模衍射场分布和空间频谱的计算公式。
The spatial frequency spectrum of intensity distribution on the focal plane is analyzed,which shows that the uniformity can be further improved by controlling the low frequency spatial modulations in the focal spot.
基于对均匀照明系统焦面输出光强分布的空间频谱分析,从空间频域的角度,指出通过控制焦斑中的低频调制成分,能够进一步提高实际均匀照明的效果。
In this paper, the performance of the diffractive optical element (DOE) for beam smoothing is analyzed by using the spatial frequency spectrum.
采用空间频谱方法分析了衍射光学束匀滑器件的焦面光强分布 ,重新定义了光能利用率及顶部不均匀性两个参数 ,由于其定义的溯源性 ,能够真实准确地评价束匀滑器件的设计性能。
The frequency spectrum and light intensity distribution of the dielectric planar waveguide diffracted field are educed,they are described by the sinc function.
在平面坐标系中简化电磁波的瑞利 -索末菲标量衍射积分公式 ,推导出折射率对称阶跃分布的介质平面波导的基模衍射场分布的计算公式 ,给出由sinc函数形式描述的端口衍射场空间频谱和光强分布。
The frequency spectrums of dielectric and metal cladding waveguide are deduced.
从电磁波的瑞利-索末菲标量衍射积分公式出发,利用罗兰圆结构特殊的光学性能,在平面坐标系中简化标量衍射积分公式,推导出横截面折射率阶跃分布的平面波导端口衍射场分布的计算公式,并导出常用的对称结构介质平面波导和金属平面波导端口衍射场的空间频谱,阐明平面波导端口衍射场就是驻波衍射场的本质。
Error-regulating method for magnetorheological finished aspherics focused on spatial frequency;
基于空间频率评价磁流变抛光非球面中频误差
Influence of spatial frequency calibration on OTF test precision;
光学传递函数测试及空间频率标定方法
Qualitative Investigation to Diffraction efficiency Versus Spatial Frequency of Hologram Grating;
全息光栅衍射效率与空间频率的定性研究
Space Spectrum and Filtering of Apertured Bessel Beam
加光阑的贝塞尔光束的空间频谱和滤波
Analysis of the Spatial Spectrum and Recording Capability of the Digital Holography with Point Source;
点源参考光数字全息空间频谱和数据记录能力分析
Fourier transformation is used to analyze the spatial frequency spectrum and intensity distribution of the diffraction beams.
介绍了设计原理方法，采用傅里叶变换分析了衍射光束的空间频谱及光强分布。
Research on Dynamic Spectrum Management Based on Multi-dimension Spectrum Space
多维频谱空间下的动态频谱管理研究
Mass Spectroscopic Diagnosis of Plasma Space Properties in Radio Frequency Glow Discharge;
射频辉光放电等离子体空间特性的质谱诊断
steric exclusion chromatography
空间排阻色谱(法)
One of the intervals between the lines of a staff.
（谱表的）线间的空白
optical spatial frequency filter
光学空间频率滤色器
Cooperative detection algorithm of idle spectrum in cognitive radio
空闲频谱的最优联合软判决检测算法
The application of optical information processing with rebuilding the frequency spectrum is based on the experiment of Abbe-Poter and spatial filtering.
利用阿贝波特实验装置和空间滤波系统,从改变频谱入手改造一幅光学图像,进行光学信息处理.
Preliminary spatial resolved studies of plasma in radiofrequency glow discharge optical emission spectroscopy for direct analysis of solid samples
应用于固体样品直接分析的射频辉光光谱中等离子体空间解析的初步研究
This relation between the frequency and the field spectra was noted experimentally.
实验上已经发现频率和场频谱之间的这种关系。
Calculation of Interharmonic-caused Flicker Based on Spectrum Analysis
基于频谱分析的间谐波闪变效应计算
The genealogy of space discourse is an alternative reading of the urban space.
空间话语的谱系写作是对城市空间的另类解读。
Waveform simulation of low frequency line spectrum on propeller cavitation noise
舰船螺旋桨空化噪声低频线谱波形仿真
Detection Based on Interference Temperature Study of the Spectrum Hole Detection
基于干扰温度检测的频谱空洞探测研究
Influence of duty cycle on the spectrum distribution of long-period fiber gratings written with the high frequency CO_2 laser pulses
占空比对高频CO_2激光脉冲制作的LPFG光谱影响
Wavelength Calibration of Spatially Modulated Imaging Fourier Transform Spectrometer
空间调制干涉光谱成像仪光谱定标技术研究